1. Firstly, 'sa"nkhara' is one of the 'khandha' which is sometimesalso called 'cetanaa' or 'kamma', - "volition".

"And what are fabrications? These six classes of intention — intention with regard to form, intention with regard to sound, intention with regard to smell, intention with regard to taste, intention with regard to tactile sensation, intention with regard to ideas: these are called fabrications. From the origination of contact comes the origination of fabrications. From the cessation of contact comes the cessation of fabrications. And just this noble eightfold path is the path of practice leading to the cessation of fabrications...

"When there is a body, pleasure & pain arise internally with bodily intention as the cause; or when there is speech, pleasure & pain arise internally with verbal intention as the cause; or when there is intellect, pleasure & pain arise internally with intellectual intention as the cause.

"From ignorance as a requisite condition, then either of one's own accord one fabricates bodily fabrication on account of which that pleasure & pain arise internally, or because of others one fabricates bodily fabrication on account of which that pleasure & pain arise internally. Either alert one fabricates bodily fabrication on account of which that pleasure & pain arise internally, or unalert one fabricates bodily fabrication on account of which that pleasure & pain arise internally. (Similarly with verbal & intellectual fabrications.)

"Now, ignorance is bound up in these things. From the remainderless fading & cessation of that very ignorance, there no longer exists [the sense of] the body on account of which that pleasure & pain internally arise. There no longer exists the speech... the intellect on account of which that pleasure & pain internally arise. There no longer exists the field, the site, the dimension, or the issue on account of which that pleasure & pain internally arise."

"And what is bright kamma with bright ripening? Here someone produces a (kammic) bodily process not (bound up) with affliction, he produces a (kammic) verbal process not (bound up) with affliction, he produces a (kammic) mental process not (bound up) with affliction.

"Well then — knowing in what way, seeing in what way, does one without delay put an end to the effluents? There is the case where an uninstructed, run-of-the-mill person — who has no regard for noble ones, is not well-versed or disciplined in their Dhamma; who has no regard for men of integrity, is not well-versed or disciplined in their Dhamma — assumes form to be the self. That assumption is a fabrication."

"In-&-out breaths are bodily; these are things tied up with the body. That's why in-&-out breaths are bodily fabrications. Having first directed one's thoughts and made an evaluation, one then breaks out into speech. That's why directed thought & evaluation are verbal fabrications. Perceptions & feelings are mental; these are things tied up with the mind. That's why perceptions & feelings are mental fabrications."